For Alex Mack and her friends, going to a Renaissance Fair is a cool way to learn about the Middle Ages without even cracking a book. It's like stepping right into the days of knights and lords and ladies.
And Alex, for once, could use a knight in shining armor. Separated from her friends, she gets whacked in the head by a stray leather ball, and it knocks her out cold. When she wakes up, Alex has completely lost her memory!
It doesn't take her long to realize she's got some awesome powers. But she also senses they've put her in real danger. She knows someone is after her. But without her memory, how will she ever know who's an enemy, and who's a friend?